Backtrace

WARNING: CPU: 0 PID: 4100125 at fs/btrfs/block-group.c:127 btrfs_put_block_group+0x77/0xb0
Modules linked in: ufs hfsplus hfs minix msdos jfs xfs rpcrdma rdma_cm iw_cm ib_cm ib_core overlay snd_seq_dummy snd_hrtimer squashfs bridge stp llc rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache netfs nf_conntrack_sip nf_conntrack_sane nf_conntrack_ftp nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack_tftp nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nf_tables rfkill nfnetlink vfat fat usblp intel_rapl_msr ucsi_ccg ppdev typec_ucsi typec intel_rapl_common edac_mce_amd snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic ledtrig_audio kvm snd_hda_intel pktcdvd snd_intel_dspcfg ses snd_intel_sdw_acpi enclosure snd_usb_audio raid456 irqbypass snd_hda_codec async_raid6_recov snd_usbmidi_lib async_memcpy async_pq scsi_transport_sas async_xor rapl async_tx ftdi_sio snd_hda_core snd_rawmidi snd_hwdep nvidia_drm(POE) snd_seq wmi_bmof snd_seq_device nvidia_modeset(POE) bcache snd_pcm pcspkr drm_kms_helper crc64 k10temp snd_timer
 i2c_piix4 cec snd i2c_nvidia_gpu joydev soundcore parport_pc parport gpio_amdpt gpio_generic acpi_cpufreq v4l2loopback(OE) videodev mc nvidia_uvm(POE) nfsd nvidia(POE) auth_rpcgss nfs_acl lockd binfmt_misc grace sunrpc drm zram dm_crypt hid_logitech_hidpp hid_logitech_dj crct10dif_pclmul crc32_pclmul crc32c_intel wacom ghash_clmulni_intel ccp sp5100_tco r8169 nvme nvme_core wmi uas usb_storage uinput xpad ff_memless target_core_mod ipmi_devintf ipmi_msghandler fuse loop [last unloaded: ip_tables]
CPU: 0 PID: 4100125 Comm: umount Tainted: P        W  OE     5.16.8-100.fc34.x86_64 #1
Hardware name: Micro-Star International Co., Ltd MS-7B86/B450-A PRO MAX (MS-7B86), BIOS M.D0 05/17/2021
RIP: 0010:btrfs_put_block_group+0x77/0xb0
Code: 21 48 8b bd c0 00 00 00 e8 b6 cd db ff 48 8b bd 48 02 00 00 e8 aa cd db ff 48 89 ef 5d e9 a1 cd db ff 0f 0b eb db 0f 0b eb b1 <0f> 0b eb b4 0f 0b 48 8b 45 00 48 89 ee 48 8d b8 48 08 00 00 e8 10
RSP: 0018:ffffa6dcc390bde8 EFLAGS: 00010206
RAX: 0000000000000001 RBX: ffff98542a8c9000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffd7971d46c2c0 RDI: ffff985425a65800
RBP: ffff985425a65800 R08: 0000000000000000 R09: 0000000000330027
R10: ffff985a11b0b000 R11: 0000000000000000 R12: ffff98542a8c9088
R13: ffff98542a8c9098 R14: ffff985425a658c8 R15: dead000000000100
FS:  00007f41b6d99c40(0000) GS:ffff985adea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f56d33d2d70 CR3: 000000024c18c000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 btrfs_free_block_groups+0x215/0x380
 close_ctree+0x288/0x2b4
 generic_shutdown_super+0x74/0x120
 kill_anon_super+0x14/0x30
 btrfs_kill_super+0x12/0x20
 deactivate_locked_super+0x36/0xa0
 cleanup_mnt+0x131/0x190
 task_work_run+0x5c/0x90
 exit_to_user_mode_prepare+0x229/0x230
 syscall_exit_to_user_mode+0x18/0x40
 do_syscall_64+0x48/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f41b6fc835b
Code: 2b 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 90 f3 0f 1e fa 31 f6 e9 05 00 00 00 0f 1f 44 00 00 f3 0f 1e fa b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 e9 2a 0c 00 f7 d8
RSP: 002b:00007ffebbb32028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000563b6f1daa20 RCX: 00007f41b6fc835b
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000563b6f1d9690
RBP: 0000563b6f1d9460 R08: 0000000000000000 R09: 00007f41b708ba60
R10: 00007f41b708c080 R11: 0000000000000246 R12: 0000000000000000
R13: 0000563b6f1d9690 R14: 0000563b6f1d9570 R15: 0000563b6f1d9460
 </TASK>